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Supported raster formats

 

Scan2CAD supports the following raster formats.

 

To save hard disk space it is advisable to use a compressed format such as TIFF rather than an uncompressed format such as BMP.

BMP
CALS (Type 1 – .CAL, .GP4, .CG4, .MIL)
CIT
GIF

 (Usually too poor quality for conversion so not recommended.)

If File Menu > Raster > Options > GIF Use Interlace is checked when you save a raster image as a GIF file, the image is saved as an interlaced GIF file.

IMG
JPEG

 (Usually too poor quality for conversion so not recommended.)

When you save a raster image as a JPEG file, the image is saved using the compression level currently set in File Menu > Raster > Options > JPEG Photo Quality.

The lower the compression level the smaller the file and the lower its quality. A compression level of 75 is typically a good balance between compression level and image quality.

PCX
PDF
PNG

When you save a raster image as a PNG file it is saved according to the settings currently selected in File Menu > Raster > Options > PNG. These are:

Use Interlace – if this is checked, the image is saved as an interlaced PNG file.

Compression – the higher the compression the smaller the file and the lower its quality. The default compression is 6.

Filters – the default is None. Sub, Up, Average and Paeth can be selected in any combination. All selects Sub, Up, Average and Paeth.

TIFF

TIFF fax group 3 and fax group 4 files can only be black and white. They cannot be grayscale or color.

Scan2CAD does support multi-image TIFF files.

Scan2CAD does not support tiled TIFF files.

 

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